package filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebFilter(filterName = "CharFilter",urlPatterns = {"/*"})
public class CharFilter implements Filter {
    public void destroy() {
    }

    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {
        HttpServletRequest request=(HttpServletRequest)req;
        request.getSession().setMaxInactiveInterval(60);

        req.setCharacterEncoding("utf-8");
        resp.setCharacterEncoding("utf-8");
        chain.doFilter(req, resp);//将请求转发给过滤器链上下一个对象
    }

    public void init(FilterConfig config) throws ServletException {

    }

}
